Finding the Fourth Proportional to 1,291,967,474.16, 1,782,679,933.92 and 727,364,555.76
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Solution
The fourth proportional to 1,291,967,474.16, 1,782,679,933.92 and 727,364,555.76 is: 1,003,630,682.76
Step by Step Solution
- Step 1: Write the proportion equation
1,291,967,474.16 : 1,782,679,933.92 = 727,364,555.76 : x - Step 2: Convert to fraction form
1,291,967,474.16/1,782,679,933.92 = 727,364,555.76/x - Step 3: Cross multiply
1,291,967,474.16x = 1,782,679,933.92 × 727,364,555.76 - Step 4: Simplify right side
1,291,967,474.16x = 1,296,658,198,197,987,072 - Step 5: Solve for x
x = 1,296,658,198,197,987,072/1,291,967,474.16 - Step 6: Final answer
x = 1,003,630,682.76
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.